pegmatite

English dictionary entry

Meanings

noun

A coarsely crystalline igneous or plutonic rock composed primarily of feldspar and quartz, normally with muscovite and/or biotite mica.

/ˈpɛɡmətaɪt/ LL-Q1860 (eng)-Vealhurl-pegmatite.wav

pegmatite pegmatites

From Ancient Greek πήγνυμι (pḗgnumi, “to attach, join”) + -ite

feldspar granite quartz

micropegmatite pegmatitic pegmatize pegmatoid

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